forked from OSchip/llvm-project
74 lines
4.8 KiB
Objective-C
74 lines
4.8 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,osx.coreFoundation.CFRetainRelease,osx.cocoa.ClassRelease,osx.cocoa.RetainCount -analyzer-store=region -analyzer-output=text -fobjc-gc-only -verify %s
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/***
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This file is for testing the path-sensitive notes for retain/release errors.
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Its goal is to have simple branch coverage of any path-based diagnostics,
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not to actually check all possible retain/release errors.
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This file is for notes that only appear in a GC-enabled analysis.
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Non-specific and ref-count-only notes should go in retain-release-path-notes.m.
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***/
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@interface NSObject
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+ (id)alloc;
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- (id)init;
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- (void)dealloc;
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- (Class)class;
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- (id)retain;
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- (void)release;
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- (void)autorelease;
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@end
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@interface Foo : NSObject
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- (id)methodWithValue;
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@property(retain) id propertyValue;
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@end
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typedef struct CFType *CFTypeRef;
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CFTypeRef CFRetain(CFTypeRef);
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void CFRelease(CFTypeRef);
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id NSMakeCollectable(CFTypeRef);
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CFTypeRef CFMakeCollectable(CFTypeRef);
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CFTypeRef CFCreateSomething();
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CFTypeRef CFGetSomething();
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void creationViaCFCreate () {
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CFTypeRef leaked = CFCreateSomething(); // expected-warning{{leak}} expected-note{{Call to function 'CFCreateSomething' returns a Core Foundation object with a +1 retain count. Core Foundation objects are not automatically garbage collected}}
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return; // expected-note{{Object leaked: object allocated and stored into 'leaked' is not referenced later in this execution path and has a retain count of +1}}
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}
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void makeCollectable () {
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CFTypeRef leaked = CFCreateSomething(); // expected-warning{{leak}} expected-note{{Call to function 'CFCreateSomething' returns a Core Foundation object with a +1 retain count. Core Foundation objects are not automatically garbage collected}}
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CFRetain(leaked); // expected-note{{Reference count incremented. The object now has a +2 retain count}}
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CFMakeCollectable(leaked); // expected-note{{In GC mode a call to 'CFMakeCollectable' decrements an object's retain count and registers the object with the garbage collector. An object must have a 0 retain count to be garbage collected. After this call its retain count is +1}}
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NSMakeCollectable(leaked); // expected-note{{In GC mode a call to 'NSMakeCollectable' decrements an object's retain count and registers the object with the garbage collector. Since it now has a 0 retain count the object can be automatically collected by the garbage collector}}
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CFRetain(leaked); // expected-note{{Reference count incremented. The object now has a +1 retain count. The object is not eligible for garbage collection until the retain count reaches 0 again}}
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return; // expected-note{{Object leaked: object allocated and stored into 'leaked' is not referenced later in this execution path and has a retain count of +1}}
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}
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void retainReleaseIgnored () {
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id object = [[NSObject alloc] init]; // expected-note{{Method returns an Objective-C object with a +0 retain count}}
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[object retain]; // expected-note{{In GC mode the 'retain' message has no effect}}
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[object release]; // expected-note{{In GC mode the 'release' message has no effect}}
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[object autorelease]; // expected-note{{In GC mode an 'autorelease' has no effect}}
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CFRelease((CFTypeRef)object); // expected-warning{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}} expected-note{{Incorrect decrement of the reference count of an object that is not owned at this point by the caller}}
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}
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@implementation Foo (FundamentalRuleUnderGC)
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- (id)getViolation {
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id object = (id) CFCreateSomething(); // expected-warning{{leak}} expected-note{{Call to function 'CFCreateSomething' returns a Core Foundation object with a +1 retain count. Core Foundation objects are not automatically garbage collected}}
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return object; // expected-note{{Object returned to caller as an owning reference (single retain count transferred to caller)}} expected-note{{Object leaked: object allocated and stored into 'object' and returned from method 'getViolation' is potentially leaked when using garbage collection. Callers of this method do not expect a returned object with a +1 retain count since they expect the object to be managed by the garbage collector}}
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}
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- (id)copyViolation {
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id object = (id) CFCreateSomething(); // expected-warning{{leak}} expected-note{{Call to function 'CFCreateSomething' returns a Core Foundation object with a +1 retain count. Core Foundation objects are not automatically garbage collected}}
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return object; // expected-note{{Object returned to caller as an owning reference (single retain count transferred to caller)}} expected-note{{Object leaked: object allocated and stored into 'object' and returned from method 'copyViolation' is potentially leaked when using garbage collection. Callers of this method do not expect a returned object with a +1 retain count since they expect the object to be managed by the garbage collector}}
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}
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@end
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